The Five-Year Wall
A three-year-old BMW M3 still holds 83.3 percent of its original sticker price. Give it two more years and that figure collapses to 50.9 percent, a 32-point drop packed into a single 24-month window, according to depreciation data from CarEdge. That is not a gentle slope. It is a cliff, and it sits almost exactly at the five-year mark, which happens to line up with when a lot of first-owner leases and CPO warranties expire and a fresh wave of clean, low-mile M3s hits the used market at once.
The Mercedes-AMG GT tells a similar story with a smoother slope instead of a ledge. CarEdge’s numbers show it retaining 86.8 percent of value at one year, 73.2 percent at three years, and 62.6 percent at five, before value retention nearly halves again by year ten, down to 33.1 percent. The GT does not fall off a cliff so much as roll down a steady hill, and the five-to-ten-year stretch is where the real savings show up for a buyer patient enough to wait.
The Jaguar’s Cliff Arrives Late, and Hits Harder
The F-Type takes longer to crack, then breaks worse than almost anything else in this class. iSeeCars pegs five-year depreciation at 47 percent for the coupe, leaving 53 percent of value intact, respectable enough on its own. But CarEdge’s year-by-year breakdown shows what happens next: value retention slides from 49.3 percent at year five to just 29.3 percent at year seven, a 20-point drop in two years, before settling around 24.4 percent by year ten. Buy an F-Type at four years old and you are still paying a premium for relative freshness. Wait until it is seven, and the depreciation curve has done most of the work for you.
The R8 Doesn’t Really Have a Cliff
The Audi R8 behaves differently, and the reason is production volume. AutoPadre’s depreciation curve shows a roughly five-year-old R8 having lost around 20 percent of value, with a forecasted six-year loss near 41 percent, a normal enough trajectory so far. But look at R8s from the 2008 to 2011 model years, now well into their second decade on the road, and depreciation levels off in the high-40s to low-50-percent range instead of continuing to erode. A car built in numbers that never approached mainstream sports car volume simply runs out of used competition to depress prices further, so the curve flattens rather than falling. There is no single magic age here so much as a floor, and the R8 tends to find it and hold.
The Porsche 911 Refuses to Play Along
Then there is the car that complicates this entire premise. iSeeCars data puts 911 coupe depreciation at just 17 percent after five years, meaning a five-year-old car still carries 83 percent of its original value, roughly where the M3 sits after only three. Kelley Blue Book’s tracking of the 2020 model is even more extreme: that car has actually retained 102 percent of its value over roughly three years on the road, putting it in the top 10 percent of all 2020 coupes for value retention. The 911 is not cheap at any age. It is the control group that proves the other curves are real.
So What Age Actually Gets You a Deal
Line the data up and a pattern still emerges, even with the 911 skewing the average. For BMW’s M cars and the AMG GT, five years old is where meaningful value has already left the building without the car being remotely worn out, since most of these are still under 60,000 miles and well within reach of independent specialists for service. For the Jaguar F-Type, patience pays more: seven years old is where the real discount kicks in, once the second wave of depreciation has broken. For the R8, age matters less than mileage and condition, since the value floor arrives early and mostly just sits there. And for the 911, there effectively is no discount age. You are paying Porsche tax whether the car is one year old or eleven.
The depreciation curve, in other words, is not one line. It is five different cars hitting the used market’s patience at five different points, and knowing which curve you are actually shopping matters more than any single rule of thumb about buying a European sports car “at five years old.”